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animelover1984 / youtube-dl

Command-line program to download videos from YouTube.com and other video sites
http://ytdl-org.github.io/youtube-dl/
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Incomplete and fragmented download resulting from NND timeshifted livestreams #10

Closed Defrost4528 closed 3 years ago

Defrost4528 commented 4 years ago

Checklist

Verbose log

[debug] System config: []
[debug] User config: ['--ffmpeg-location', 'C:\\userprograms\\ffmpeg-20200504-5767a2e-win64-static\\bin', '-f', '(bestvideo+bestaudio/best)', '-o', 'E:\\youtube-dl\\%(uploader)s [%(upload_date)s]%(title)s[%(id)s].%(ext)s', '--all-subs', '--write-sub', '--write-all-thumbnails', '--write-info-json', '--add-metadata', '--write-description', '--retries', '30']
[debug] Custom config: []
[debug] Command-line args: ['-v', '--cookies', '.\\nicovideo_cookies_premium.txt', 'https://live2.nicovideo.jp/watch/lv327626435']
[debug] Encodings: locale cp932, fs utf-8, out utf-8, pref cp932
[debug] youtube-dl version 2020.07.28
[debug] Python version 3.7.3 (CPython) - Windows-10-10.0.18362-SP0
[debug] exe versions: ffmpeg git-2020-05-04-5767a2e, ffprobe git-2020-05-04-5767a2e
[debug] Proxy map: {}
[NiconicoLive] lv327626435: Downloading webpage
[NiconicoLive] Detected post-March 2019 HLS-based stream
[NiconicoLive] lv327626435: Downloading m3u8 information
[info] Writing video description to: E:\youtube-dl\株式会社ブシロードムーブ [20200907]「デレラジ☆(スター)」 【アイド
ルマスター シンデレラガールズ】[lv327626435].description
[info] Writing video description metadata as JSON to: E:\youtube-dl\株式会社ブシロードムーブ [20200907]「デレラジ☆(ス
ター)」 【アイドルマスター シンデレラガールズ】[lv327626435].info.json
[debug] Invoking downloader on 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/playlist.m3u8?start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz'
[download] Destination: E:\youtube-dl\株式会社ブシロードムーブ [20200907]「デレラジ☆(スター)」 【アイドルマスター シ
ンデレラガールズ】[lv327626435].m3u8
[debug] ffmpeg command line: "C:\userprograms\ffmpeg-20200504-5767a2e-win64-static\bin\ffmpeg" -y -loglevel verbose -headers "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.91 Safari/537.36
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding: gzip, deflate
Accept-Language: en-us,en;q=0.5
" -i "https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/playlist.m3u8?start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz" -c copy -f mp4 "-bsf:a" aac_adtstoasc "file:E:\youtube-dl\株式会社ブシロードムーブ [20200907]「デ
レラジ☆(スター)」 【アイドルマスター シンデレラガールズ】[lv327626435].m3u8.part"
ffmpeg version git-2020-05-04-5767a2e Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9.3.1 (GCC) 20200328
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 43.100 / 56. 43.100
  libavcodec     58. 82.100 / 58. 82.100
  libavformat    58. 42.102 / 58. 42.102
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 80.100 /  7. 80.100
  libswscale      5.  6.101 /  5.  6.101
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
[tcp @ 000001fedf9f0c80] Starting connection attempt to 133.152.54.33 port 443
[tcp @ 000001fedf9f0c80] Successfully connected to 133.152.54.33 port 443
[hls @ 000001fedf9ed700] Skip ('#EXT-X-VERSION:3')
[hls @ 000001fedf9ed700] Skip ('#EXT-X-START:TIME-OFFSET=0.0')
[hls @ 000001fedf9ed700] Skip ('#STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#CURRENT-POSITION:0.0')
[hls @ 000001fedf9ed700] Skip ('#DMC-STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#DMC-CURRENT-POSITION:0.0')
[hls @ 000001fedf9ed700] HLS request for url 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/5000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz', offset 0, playlist 0
[hls @ 000001fedf9ed700] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/5000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[tcp @ 000001fee0845d80] Starting connection attempt to 133.152.54.33 port 443
[tcp @ 000001fee0845d80] Successfully connected to 133.152.54.33 port 443
[hls @ 000001fedf9ed700] HLS request for url 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/10000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz', offset 0, playlist 0
[hls @ 000001fedf9ed700] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/10000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[tcp @ 000001fee083e9c0] Starting connection attempt to 133.152.54.33 port 443
[tcp @ 000001fee083e9c0] Successfully connected to 133.152.54.33 port 443
[h264 @ 000001fee0c7a540] Reinit context to 1280x720, pix_fmt: yuv420p
Input #0, hls, from 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/playlist.m3u8?start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz':
  Duration: N/A, start: 6.000000, bitrate: N/A
  Program 0
    Metadata:
      variant_bitrate : 0
    Stream #0:0: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 0
    Stream #0:1: Video: h264 (High), 1 reference frame ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, left), 1280x720 [SAR 1:1 DAR 16:9], 30 tbr, 90k tbn, 60 tbc
    Metadata:
      variant_bitrate : 0
Output #0, mp4, to 'file:E:\youtube-dl\株式会社ブシロードムーブ [20200907]「デレラジ☆(スター)」 【アイドルマスター シ
ンデレラガールズ】[lv327626435].m3u8.part':
  Metadata:
    encoder         : Lavf58.42.102
    Stream #0:0: Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(tv, bt709, left), 1280x720 (0x0) [SAR 1:1 DAR 16:9], q=2-31, 30 tbr, 90k tbn, 90k tbc
    Metadata:
      variant_bitrate : 0
    Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 0
Stream mapping:
  Stream #0:1 -> #0:0 (copy)
  Stream #0:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
[tcp @ 000001fee0c63800] Starting connection attempt to 133.152.54.33 port 443s/s speed=0.232x
[tcp @ 000001fee0c63800] Successfully connected to 133.152.54.33 port 443
[hls @ 000001fedf9ed700] Skip ('#EXT-X-VERSION:3')
[hls @ 000001fedf9ed700] Skip ('#EXT-X-START:TIME-OFFSET=0.0')
[hls @ 000001fedf9ed700] Skip ('#STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#CURRENT-POSITION:15.0')
[hls @ 000001fedf9ed700] Skip ('#DMC-STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#DMC-CURRENT-POSITION:15.0')
[hls @ 000001fedf9ed700] skipping 1 segments ahead, expired from playlists
[hls @ 000001fedf9ed700] HLS request for url 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/20000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz', offset 0, playlist 0
[https @ 000001fee0840d40] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/20000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[https @ 000001fee0c7bbc0] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/playlist.m3u8?start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[hls @ 000001fedf9ed700] Skip ('#EXT-X-VERSION:3')
[hls @ 000001fedf9ed700] Skip ('#EXT-X-START:TIME-OFFSET=0.0')
[hls @ 000001fedf9ed700] Skip ('#STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#CURRENT-POSITION:35.0')
[hls @ 000001fedf9ed700] Skip ('#DMC-STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#DMC-CURRENT-POSITION:35.0')
[hls @ 000001fedf9ed700] skipping 3 segments ahead, expired from playlists
[hls @ 000001fedf9ed700] HLS request for url 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/40000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz', offset 0, playlist 0
[https @ 000001fee0a46ac0] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/40000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[https @ 000001fee0c7bbc0] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/playlist.m3u8?start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[hls @ 000001fedf9ed700] Skip ('#EXT-X-VERSION:3')
[hls @ 000001fedf9ed700] Skip ('#EXT-X-START:TIME-OFFSET=0.0')
[hls @ 000001fedf9ed700] Skip ('#STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#CURRENT-POSITION:75.0')
[hls @ 000001fedf9ed700] Skip ('#DMC-STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#DMC-CURRENT-POSITION:75.0')
[hls @ 000001fedf9ed700] skipping 7 segments ahead, expired from playlists
[hls @ 000001fedf9ed700] HLS request for url 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/80000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz', offset 0, playlist 0
[https @ 000001fee0840d40] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/80000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[https @ 000001fee0c7bbc0] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/playlist.m3u8?start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[hls @ 000001fedf9ed700] Skip ('#EXT-X-VERSION:3')
[hls @ 000001fedf9ed700] Skip ('#EXT-X-START:TIME-OFFSET=0.0')
[hls @ 000001fedf9ed700] Skip ('#STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#CURRENT-POSITION:105.0')
[hls @ 000001fedf9ed700] Skip ('#DMC-STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#DMC-CURRENT-POSITION:105.0')
[hls @ 000001fedf9ed700] skipping 5 segments ahead, expired from playlists
[hls @ 000001fedf9ed700] HLS request for url 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/110000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz', offset 0, playlist 0
[https @ 000001fee0a46ac0] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/110000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[https @ 000001fee0c7bbc0] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/playlist.m3u8?start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading

...

[hls @ 000001fedf9ed700] Skip ('#EXT-X-VERSION:3')
[hls @ 000001fedf9ed700] Skip ('#EXT-X-START:TIME-OFFSET=0.0')
[hls @ 000001fedf9ed700] Skip ('#STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#CURRENT-POSITION:2380.0')
[hls @ 000001fedf9ed700] Skip ('#DMC-STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#DMC-CURRENT-POSITION:2380.0')
[hls @ 000001fedf9ed700] skipping 1 segments ahead, expired from playlists
[hls @ 000001fedf9ed700] HLS request for url 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/2385000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz', offset 0, playlist 0
[https @ 000001fee0840d40] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/2385000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[https @ 000001fee0c7bbc0] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/playlist.m3u8?start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[hls @ 000001fedf9ed700] Skip ('#EXT-X-VERSION:3')
[hls @ 000001fedf9ed700] Skip ('#EXT-X-START:TIME-OFFSET=0.0')
[hls @ 000001fedf9ed700] Skip ('#STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#CURRENT-POSITION:2390.0')
[hls @ 000001fedf9ed700] Skip ('#DMC-STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#DMC-CURRENT-POSITION:2390.0')
[hls @ 000001fedf9ed700] skipping 1 segments ahead, expired from playlists
[hls @ 000001fedf9ed700] HLS request for url 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/2395000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz', offset 0, playlist 0
[https @ 000001fee0a46ac0] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/2395000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[https @ 000001fee0c7bbc0] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/playlist.m3u8?start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[hls @ 000001fedf9ed700] Skip ('#EXT-X-VERSION:3')
[hls @ 000001fedf9ed700] Skip ('#EXT-X-START:TIME-OFFSET=0.0')
[hls @ 000001fedf9ed700] Skip ('#STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#CURRENT-POSITION:2425.0')
[hls @ 000001fedf9ed700] Skip ('#DMC-STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#DMC-CURRENT-POSITION:2425.0')
[hls @ 000001fedf9ed700] skipping 6 segments ahead, expired from playlists
[hls @ 000001fedf9ed700] HLS request for url 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/2430000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz', offset 0, playlist 0
[https @ 000001fee0840d40] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/2430000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[https @ 000001fee0c7bbc0] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/playlist.m3u8?start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[hls @ 000001fedf9ed700] Skip ('#EXT-X-VERSION:3')
[hls @ 000001fedf9ed700] Skip ('#EXT-X-START:TIME-OFFSET=0.0')
[hls @ 000001fedf9ed700] Skip ('#STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#CURRENT-POSITION:2435.0')
[hls @ 000001fedf9ed700] Skip ('#DMC-STREAM-DURATION:2460.608')
[hls @ 000001fedf9ed700] Skip ('#DMC-CURRENT-POSITION:2435.0')
[hls @ 000001fedf9ed700] skipping 1 segments ahead, expired from playlists
[hls @ 000001fedf9ed700] HLS request for url 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/2440000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz', offset 0, playlist 0
[https @ 000001fee0a46ac0] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/2440000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[hls @ 000001fedf9ed700] HLS request for url 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/2445000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz', offset 0, playlist 0
[https @ 000001fee0840d40] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/2445000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[hls @ 000001fedf9ed700] HLS request for url 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/2450000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz', offset 0, playlist 0
[https @ 000001fee0a46ac0] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/2450000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[hls @ 000001fedf9ed700] HLS request for url 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/2455000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz', offset 0, playlist 0
[https @ 000001fee0840d40] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/2455000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
[hls @ 000001fedf9ed700] HLS request for url 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/2460000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz', offset 0, playlist 0
[https @ 000001fee0a46ac0] Opening 'https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/2460000.ts?start=0.0&start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz' for reading
No more output streams to write to, finishing.e=00:26:30.52 bitrate= 839.9kbits/s speed=0.613x
Not writing 'clli' atom. No content light level info.
Not writing 'mdcv' atom. Missing mastering metadata.
frame=34668 fps= 13 q=-1.0 Lsize=  164510kB time=00:26:30.60 bitrate= 847.3kbits/s speed=0.613x
video:138878kB audio:24467kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.713369%
Input file #0 (https://pc0337922fe.dmc.nico/hlsarchive/ht2_nicolive/nicolive-hamster-lv327626435_main_37e885d5181f5127415d76739392bd5b93595e8f29f5ea4faab80059fd9653fe/1/ts/playlist.m3u8?start_time=-574746493675&ht2_nicolive=34835967.8apkbyl9x8_qgau3o_3pbnfquis46tz):
  Input stream #0:0 (audio): 54179 packets read (25433819 bytes);
  Input stream #0:1 (video): 34668 packets read (142210796 bytes);
  Total: 88847 packets (167644615 bytes) demuxed
Output file #0 (file:E:\youtube-dl\株式会社ブシロードムーブ [20200907]「デレラジ☆(スター)」 【アイドルマスター シンデ
レラガールズ】[lv327626435].m3u8.part):
  Output stream #0:0 (video): 34668 packets muxed (142210796 bytes);
  Output stream #0:1 (audio): 54179 packets muxed (25054566 bytes);
  Total: 88847 packets (167265362 bytes) muxed
[AVIOContext @ 000001fee0e9dc80] Statistics: 28 seeks, 663 writeouts
[AVIOContext @ 000001fee0ae9980] Statistics: 89937696 bytes read, 0 seeks
[AVIOContext @ 000001fee08ef7c0] Statistics: 92611808 bytes read, 0 seeks
[AVIOContext @ 000001fee0e9e440] Statistics: 184187 bytes read, 0 seeks
[AVIOContext @ 000001fedfa8f6c0] Statistics: 645 bytes read, 0 seeks
[ffmpeg] Downloaded 168458581 bytes
[download] 100% of 160.65MiB in 43:21
[ffmpeg] Adding metadata to 'E:\youtube-dl\株式会社ブシロードムーブ [20200907]「デレラジ☆(スター)」 【アイドルマスタ
ー シンデレラガールズ】[lv327626435].m3u8'
[debug] ffmpeg command line: "C:\userprograms\ffmpeg-20200504-5767a2e-win64-static\bin\ffmpeg" -y -loglevel "repeat+info" -i "file:E:\youtube-dl\株式会社ブシロードムーブ [20200907]「デレラジ☆(スター)」 【アイドルマスター シンデレラガー
ルズ】[lv327626435].m3u8" -c copy -metadata "title=「デレラジ☆(スター)」 【アイドルマスター シンデレラガールズ】" -me
tadata "date=20200907" -metadata "description=ニコニコ生放送では、毎週月曜21時00分より、<br><font color=#FF4000 size=3
><b>「デレラジ☆(スター)」</b></font>をお送りします。<br><br>引き続き「アイドルマスターシンデレラガールズ」を盛り上げ
ていきましょう！<br><font color=blue size=3><b>月9はデレラジ！！！</b></font><br><div style=\"border-left:10px solid #
2E2EFE; border-bottom:1px solid #2E2EFE; padding: 1px 0px 2px 7px; margin: 30px 0px 7px 0px; letter-spacing:5px; font-weight: bold; font-size: 12px;\"><b><big>番組内容</big></b></div><b>「アイドルマスターシンデレラガールズ」を応援し、<b
r>皆さんにその魅力を伝えていく番組です。</b><br><br>プロデューサーの皆さん、一緒にシンデレラガールズを盛り上げていきま
しょう！<br><br><b>■パーソナリティ</b><br><font size=\"3\" color=\"blue\">アイドルマスターシンデレラガールズ </font><
br>出演者の詳細は響 - HiBiKi Radio Station –の番組詳細ページよりご確認ください。<br>詳細ページ→<u><a href=\"https://h
ibiki-radio.jp/description/imas_cg\" target=\"_blank\">https://hibiki-radio.jp/description/imas_cg</a></u><br><br><b> ■アーカイブ</b><br>番組アーカイブ（無料パート）は <b>響 -HiBiKi Radio Station-</b>でも、翌日 火曜日に1週間無料配信さ
れます！<br>◆響 -HiBiKi Radio Station-デレラジ☆番組ページ→<a href=\"https://hibiki-radio.jp/description/imas_cg\" t
arget=\"blank\">https://hibiki-radio.jp/description/imas_cg</a><br><b>『デレラジ』チャンネル</b>ではタイムシフト視聴を
含めて最大1ヶ月視聴可能！<br>◆チャンネルページ→<a href=\"https://ch.nicovideo.jp/dereradi\" target=\"blank\">https:/
/ch.nicovideo.jp/dereradi</a><br><br><div style=\"border-left:10px solid #2E2EFE; border-bottom:1px solid #2E2EFE; padding: 1px 0px 2px 7px; margin: 30px 0px 7px 0px; letter-spacing:5px; font-weight: bold; font-size: 12px;\"><b><big>リ
ンク</big></b></div><a href=\"https://idolmaster.jp/\" target=\"_blank\">アイドルマスター　OFFICIAL WEB</a><br><a href
=\"https://cinderella.idolmaster.jp/sl-stage/\" target=\"_blank\">アイドルマスター シンデレラガールズスターライトステ
ージ公式HP</a><br><a href=\"https://imas-cinderella.com/\" target=\"_blank\">TVアニメ「アイドルマスター シンデレラガー
ルズ」公式サイト</a><br>Twitterハッシュタグ⇒#imas_cg<br><a href=\"https://ch.nicovideo.jp/ch2633237\" target=\"_blank
\">ニコニコチャンネル　ラジオ アイドルマスター シンデレラガールズ『デレラジ』</a><br><a href=\"https://ch.nicovideo.jp
/ch2602382\" target=\"_blank\">ニコニコチャンネル　アイドルマスター シンデレラガールズ</a><br><br><a href=\"https://an
ime.nicovideo.jp/live/reserved-ikkyo.html?from=live_watch_anime\" target=\"_blank\"><u>アニメ無料一挙放送｜Nアニメ</u>
</a><br><br><a href=\"https://anime.nicovideo.jp/live/reserved-tokuban.html?from=live_watch_anime\" target=\"_blank\"><u>アニメ声優特番｜Nアニメ</u></a><br><br><a href=\"https://anime.nicovideo.jp/period/2020-summer.html?from=live_watch
_anime\" target=\"_blank\"><b><u>Nアニメ</b><br>無料動画や最新情報・生放送・マンガ・イラスト</u><br><img src=\"https:/
/nicolive.cdn.nimg.jp/live/simg/img/202006/1945196.bf11f5.jpg\"><br><u>2020夏アニメ</u></a> <a href=\"https://anime.ni
covideo.jp/free/index.html?from=live_watch_anime\" target=\"_blank\"><u>アニメ無料動画</u></a> <a href=\"https://anime
.nicovideo.jp/ranking/view-daily.html?from=live_watch_anime\" target=\"_blank\"><u>アニメランキング</u></a><br> <a hre
f=\"https://anime.nicovideo.jp/special/recommend/index.html?from=live_watch_anime\" target=\"_blank\"><u>おすすめアニ
メ</u></a><br><br><a href=\"https://anime.nicovideo.jp/live/reserved-tokuban.html?from=live_watch_anime201904\" target =\"_blank\"><u>ニコ生で放送されるアニメ特番はこちら</u></a><br><a href=\"https://anime.nicovideo.jp/live/reserved-ikky
o.html?from=live_watch_anime201904\" target=\"_blank\"><u>ニコニコで配信の無料一挙放送はこちら</u></a><br><a href=\"ht
tps://twitter.com/nicoanime_pr\" target=\"_blank\"><img src=\"https://nicolive.cdn.nimg.jp/live/simg/img/201809/1529084.5a2bc3.jpg\"alt=\"\"></a><br><br><div style=\"border-left:10px solid #2E2EFE; border-bottom:1px solid #2E2EFE; padding: 1px 0px 2px 7px; margin: 30px 0px 7px 0px; letter-spacing:5px; font-weight: bold; font-size: 12px;\"><b><big>初め
てニコニコ生放送をご利用になる方へ</big></b></div>ニコニコ生放送でコメント投稿頂くには会員登録(無料)が必要になります。
<br>コメント投稿行いたい方は<b><a href=\"https://account.nicovideo.jp/register/email?sec=nicolive_desc&amp;after_landi
ng=1\" target=\"_blank\"><u>「アカウント新規登録」</u></a></b>をクリックし、会員登録の手続きをお願い致します。<br><br>
本放送は<b><big><font color=\"#CC9900\">プレミアム高画質</font></big></b>でお送りします。プレミアム会員になると<br><b>
回線混雑時に優先視聴</b>、<b>高画質映像</b>でお楽しみいただけます。<br>この機会にぜひ、<b>プレミアム会員(有料)</b>への
登録をお試しください。<br><a href=\"https://account.nicovideo.jp/premium/register?next_url=%2Fwatch%2Flv327626435&site
=nicolive&sec=nicolive&sub=description\"><img src=\"https://nicolive.cdn.nimg.jp/live/simg/img/201906/1711281.f15d3e.png\"></a><br><font size=\"1\">ニコニコ生放送の詳細な説明は<u><a href=\"https://live.nicovideo.jp/s/niconamaguide\" tar
get=\"_blank\">「ニコニコ生放送とは」</a></u>をご覧下さい。<br>ご不明な点がございましたら、<u><a href=\"https://qa.nic
ovideo.jp/\" target=\"_blank\">ヘルプページ</a></u>をご参照下さい。</font><br><div data-official-live-ts-ranking=\"ani
me\"></div><script src=\"https://site.nicovideo.jp/officialLiveTsRank/src/official-live-ts-ranking.js\" async></script><hr>" -metadata "comment=ニコニコ生放送では、毎週月曜21時00分より、<br><font color=#FF4000 size=3><b>「デレラジ☆(ス
ター)」</b></font>をお送りします。<br><br>引き続き「アイドルマスターシンデレラガールズ」を盛り上げていきましょう！<br>
<font color=blue size=3><b>月9はデレラジ！！！</b></font><br><div style=\"border-left:10px solid #2E2EFE; border-botto
m:1px solid #2E2EFE; padding: 1px 0px 2px 7px; margin: 30px 0px 7px 0px; letter-spacing:5px; font-weight: bold; font-size: 12px;\"><b><big>番組内容</big></b></div><b>「アイドルマスターシンデレラガールズ」を応援し、<br>皆さんにその魅力を
伝えていく番組です。</b><br><br>プロデューサーの皆さん、一緒にシンデレラガールズを盛り上げていきましょう！<br><br><b>
■パーソナリティ</b><br><font size=\"3\" color=\"blue\">アイドルマスターシンデレラガールズ </font><br>出演者の詳細は響
 - HiBiKi Radio Station –の番組詳細ページよりご確認ください。<br>詳細ページ→<u><a href=\"https://hibiki-radio.jp/desc
ription/imas_cg\" target=\"_blank\">https://hibiki-radio.jp/description/imas_cg</a></u><br><br><b>■アーカイブ</b><br>
番組アーカイブ（無料パート）は <b>響 -HiBiKi Radio Station-</b>でも、翌日 火曜日に1週間無料配信されます！<br>◆響 -HiB
iKi Radio Station-デレラジ☆番組ページ→<a href=\"https://hibiki-radio.jp/description/imas_cg\" target=\"blank\">https
://hibiki-radio.jp/description/imas_cg</a><br><b>『デレラジ』チャンネル</b>ではタイムシフト視聴を含めて最大1ヶ月視聴可
能！<br>◆チャンネルページ→<a href=\"https://ch.nicovideo.jp/dereradi\" target=\"blank\">https://ch.nicovideo.jp/dere
radi</a><br><br><div style=\"border-left:10px solid #2E2EFE; border-bottom:1px solid #2E2EFE; padding: 1px 0px 2px 7px; margin: 30px 0px 7px 0px; letter-spacing:5px; font-weight: bold; font-size: 12px;\"><b><big>リンク</big></b></div><a
 href=\"https://idolmaster.jp/\" target=\"_blank\">アイドルマスター　OFFICIAL WEB</a><br><a href=\"https://cinderella.
idolmaster.jp/sl-stage/\" target=\"_blank\">アイドルマスター シンデレラガールズスターライトステージ公式HP</a><br><a hr
ef=\"https://imas-cinderella.com/\" target=\"_blank\">TVアニメ「アイドルマスター シンデレラガールズ」公式サイト</a><br
>Twitterハッシュタグ⇒#imas_cg<br><a href=\"https://ch.nicovideo.jp/ch2633237\" target=\"_blank\">ニコニコチャンネル　
ラジオ アイドルマスター シンデレラガールズ『デレラジ』</a><br><a href=\"https://ch.nicovideo.jp/ch2602382\" target=\"_
blank\">ニコニコチャンネル　アイドルマスター シンデレラガールズ</a><br><br><a href=\"https://anime.nicovideo.jp/live/r
eserved-ikkyo.html?from=live_watch_anime\" target=\"_blank\"><u>アニメ無料一挙放送｜Nアニメ</u></a><br><br><a href=\"h
ttps://anime.nicovideo.jp/live/reserved-tokuban.html?from=live_watch_anime\" target=\"_blank\"><u>アニメ声優特番｜Nア
ニメ</u></a><br><br><a href=\"https://anime.nicovideo.jp/period/2020-summer.html?from=live_watch_anime\" target=\"_bla
nk\"><b><u>Nアニメ</b><br>無料動画や最新情報・生放送・マンガ・イラスト</u><br><img src=\"https://nicolive.cdn.nimg.jp/
live/simg/img/202006/1945196.bf11f5.jpg\"><br><u>2020夏アニメ</u></a> <a href=\"https://anime.nicovideo.jp/free/index.
html?from=live_watch_anime\" target=\"_blank\"><u>アニメ無料動画</u></a> <a href=\"https://anime.nicovideo.jp/ranking/
view-daily.html?from=live_watch_anime\" target=\"_blank\"><u>アニメランキング</u></a><br> <a href=\"https://anime.nico
video.jp/special/recommend/index.html?from=live_watch_anime\" target=\"_blank\"><u>おすすめアニメ</u></a><br><br><a hr
ef=\"https://anime.nicovideo.jp/live/reserved-tokuban.html?from=live_watch_anime201904\" target=\"_blank\"><u>ニコ生で
放送されるアニメ特番はこちら</u></a><br><a href=\"https://anime.nicovideo.jp/live/reserved-ikkyo.html?from=live_watch_
anime201904\" target=\"_blank\"><u>ニコニコで配信の無料一挙放送はこちら</u></a><br><a href=\"https://twitter.com/nicoa
nime_pr\" target=\"_blank\"><img src=\"https://nicolive.cdn.nimg.jp/live/simg/img/201809/1529084.5a2bc3.jpg\"alt=\"\"></a><br><br><div style=\"border-left:10px solid #2E2EFE; border-bottom:1px solid #2E2EFE; padding: 1px 0px 2px 7px; margin: 30px 0px 7px 0px; letter-spacing:5px; font-weight: bold; font-size: 12px;\"><b><big>初めてニコニコ生放送をご利用
になる方へ</big></b></div>ニコニコ生放送でコメント投稿頂くには会員登録(無料)が必要になります。<br>コメント投稿行いたい
方は<b><a href=\"https://account.nicovideo.jp/register/email?sec=nicolive_desc&amp;after_landing=1\" target=\"_blank\"
><u>「アカウント新規登録」</u></a></b>をクリックし、会員登録の手続きをお願い致します。<br><br>本放送は<b><big><font co
lor=\"#CC9900\">プレミアム高画質</font></big></b>でお送りします。プレミアム会員になると<br><b>回線混雑時に優先視聴</b>
、<b>高画質映像</b>でお楽しみいただけます。<br>この機会にぜひ、<b>プレミアム会員(有料)</b>への登録をお試しください。<b
r><a href=\"https://account.nicovideo.jp/premium/register?next_url=%2Fwatch%2Flv327626435&site=nicolive&sec=nicolive&sub=description\"><img src=\"https://nicolive.cdn.nimg.jp/live/simg/img/201906/1711281.f15d3e.png\"></a><br><font size=\"1\">ニコニコ生放送の詳細な説明は<u><a href=\"https://live.nicovideo.jp/s/niconamaguide\" target=\"_blank\">「ニコニ
コ生放送とは」</a></u>をご覧下さい。<br>ご不明な点がございましたら、<u><a href=\"https://qa.nicovideo.jp/\" target=\"_
blank\">ヘルプページ</a></u>をご参照下さい。</font><br><div data-official-live-ts-ranking=\"anime\"></div><script src=
\"https://site.nicovideo.jp/officialLiveTsRank/src/official-live-ts-ranking.js\" async></script><hr>" -metadata "purl=https://live2.nicovideo.jp/watch/lv327626435" -metadata "artist=株式会社ブシロードムーブ" "file:E:\youtube-dl\株式会社
ブシロードムーブ [20200907]「デレラジ☆(スター)」 【アイドルマスター シンデレラガールズ】[lv327626435].temp.m3u8"
[full_log.txt](https://github.com/animelover1984/youtube-dl/files/5184533/full_log.txt)

(full log has been attatched if needed.)

Description

Resulting download remains in fragmented form, as multiple .ts files, and an m3u playlist which only points to 5 files. Not only that, but the ts files that are downloaded are also incomplete. After manually putting them together through concat, there are skipped sections of the video which are still streamable in the livestream. I believe these to be the areas where these occur: "skipping X segments ahead, expired from playlists". The segments that are skipped seem to also not be consistent between the times I run it.

Platform: Windows 10 Command: youtube-dl --cookies .\nicovideo_cookies_premium.txt https://live2.nicovideo.jp/watch/lv327626435 (nicovideo_cookies_premium.txt are the cookies extracted from the site)

Config:

--ffmpeg-location "C:\userprograms\ffmpeg-20200831-4a11a6f-win64-static\bin"
-o "E:\youtube-dl\%(uploader)s [%(upload_date)s]%(title)s[%(id)s].%(ext)s"
--all-subs
--write-sub
--write-all-thumbnails
--write-info-json
--add-metadata
--write-description
--retries '30'
--get-comments

Links of livestreams attempted: https://live2.nicovideo.jp/watch/lv327626496 (24 hours) https://live2.nicovideo.jp/watch/lv327626435 (Japan only, VPN used)

Thank you for your time!

bbepis commented 4 years ago

I've attempted to download this on my machine and I am not receiving any skipped frames. I know there are some issues when trying to download a livestream that's actually live and not timeshifted, however that might not be related to this issue. Some things to try (in conjunction with each other):

If all else fails, specify --hls-prefer-native. It'll use the internal m3u8 parser instead of the FFMPEG one, which might not skip expired frames. However it's not the default since it doesn't fully parse the m3u8 manifest, and may result in some missed data and/or errors.

NND only allows timeshifting for up to a week, right? And on top of that there's limits to how many streams you can timeshift per month? I'll have a go at downloading the 24hr full stream myself if you're not able to fix this, and maybe the second one if I can get a japanese VPN

Oh and, do you have a discord account? It might be easier to debug this over live chat, plus there are some questions we have about NND itself you might be able to answer (specifically around premium accounts)

Defrost4528 commented 4 years ago

Will try these out and get back to you, thank you.

As for downloading the timeshifts go, there is indeed a 1 week limit, thanks for the concern! Both livestreams are now second priority, now that it has shown up in multiple places on the web now, but I'm still looking to try to get this downloaded, and export the comments for both streams, though that's the other opened issue haha.

Here's my Discord: cak3#2321. I'm a little new to premium NND myself actually, but hopefully I can also answer whatever questions you have about it!

bbepis commented 3 years ago

We were able to resolve this issue over Discord.

The core of this issue has to do with how NicoNico handles livestreams. It's possibly the most Japanese thing I've ever seen in my life.

Timeshifted (VOD) streams are actually presented to the user as livestream HLS manifests; this I assume is to prevent downloaders from being able to download the livestream video.

You are forced to download the stream at 1.0x speed; the server actually prevents you from downloading any other chunks than what it deems as "live" with a 403 response. As a result, you cannot download streams any faster than 1.0x. This also works in the opposite case; you cannot download slower than 1.0x as the chunks will artificially expire and ffmpeg will terminate the connection, leaving you with missing parts of the stream (and eventually stopping downloading altogether). This was the specific issue with the user; their internet connection was too slow to download the stream.

This cannot be fixed within youtube-dl unfortunately, as the logic would have to be applied within ffmpeg to restart the stream if the downloading falls behind. Let alone figuring out what javascript logic happens to restart the stream in the first place.

Fun fact: because of a bug within the NND servers, the connection cannot last longer than 24 hours. Anything beyond that has to be downloaded a second time